Semiconductor & Computer Engineering
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Difference between revisions of "x86"
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| − | '''x86''' is a family of [[little-endian]] [[instruction set architectures]] and [[instruction set architectures extension|extensions]]. As its namesake indicates, the x86 ISA offers [[binary compatibility]] all the way from the original {{intel|8086}} to modern [[microarchitecture]]s as well as [[source code compatibility]] since the {{intel|8080}}. The architecture is widely used in the [[desktop]] and [[server]] markets by a number of [[semiconductor companies|companies]] including [[Intel]], [[AMD]], [[VIA]], [[DM&P]], and [[RDC Semiconductors|RDC]]. | + | '''x86''' is a family of [[little-endian]], [[CISC]], [[instruction set architectures]] and [[instruction set architectures extension|extensions]]. As its namesake indicates, the x86 ISA offers [[binary compatibility]] all the way from the original {{intel|8086}} to modern [[microarchitecture]]s as well as [[source code compatibility]] since the {{intel|8080}}. The architecture is widely used in the [[desktop]] and [[server]] markets by a number of [[semiconductor companies|companies]] including [[Intel]], [[AMD]], [[VIA]], [[DM&P]], and [[RDC Semiconductors|RDC]]. |
Generally speaking, the term 'x86' encompasses the original {{x86|x86-16}}, {{x86|x86-32}} (IA-32), {{x86|x86-64}} (AMD64), and the various extensions such as {{x86|MMX}}, {{x86|3DNOW!}}, and {{x86|SSE}}. | Generally speaking, the term 'x86' encompasses the original {{x86|x86-16}}, {{x86|x86-32}} (IA-32), {{x86|x86-64}} (AMD64), and the various extensions such as {{x86|MMX}}, {{x86|3DNOW!}}, and {{x86|SSE}}. | ||
Revision as of 17:22, 25 October 2016
| x86 ISA | |
| Developer | Intel AMD |
| Dev model | Proprietary |
| Design | Von Neumann |
| Data word size | 8 bit 1 octets , 16 bit2 nibbles 2 octets , 32 bit4 nibbles 4 octets , 64 bit8 nibbles 8 octets
16 nibbles |
| Instruction word size | Variable "Variable" is not a number.
|
| Introduction | 1978 |
| Format | Register-Memory |
| Endianness | Little-endian |
| ISAs • By Company • By Inst • By Data | |
x86 is a family of little-endian, CISC, instruction set architectures and extensions. As its namesake indicates, the x86 ISA offers binary compatibility all the way from the original 8086 to modern microarchitectures as well as source code compatibility since the 8080. The architecture is widely used in the desktop and server markets by a number of companies including Intel, AMD, VIA, DM&P, and RDC.
Generally speaking, the term 'x86' encompasses the original x86-16, x86-32 (IA-32), x86-64 (AMD64), and the various extensions such as MMX, 3DNOW!, and SSE.
Contents
History
- Main article: History of x86
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Overview
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Registers
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Operation Modes
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Instruction Set
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Syntaxes
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Interrupts
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Extensions
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Implementations
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See also
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